diff --git a/README.md b/README.md
index 8a4a2d3..90063b8 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 ctools information
 ==================
-* Version:             1.5.0 (1 August 2017)
+* Version:             1.5.1 (1 August 2017)
 * Author:              Juergen Knoedlseder (jurgen.knodlseder@irap.omp.eu)
-* GammaLib dependency: 1.5.0
+* GammaLib dependency: 1.5.1
 
 [![Build Status](https://cta-jenkins.irap.omp.eu/buildStatus/icon?job=ctools-integrate-os)](https://cta-jenkins.irap.omp.eu/job/ctools-integrate-os/)
 
diff --git a/configure.ac b/configure.ac
index 7cefe07..b7ef11f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,7 +28,7 @@
 #############################################################################
 # Initialisation                                                            #
 #############################################################################
-AC_INIT([ctools], [1.5.0], [jurgen.knodlseder@irap.omp.eu], [ctools])
+AC_INIT([ctools], [1.5.1], [jurgen.knodlseder@irap.omp.eu], [ctools])
 AC_CONFIG_SRCDIR([src/ctselect/ctselect.cpp])
 AC_CONFIG_MACRO_DIR([m4])
 #AM_INIT_AUTOMAKE([gnu no-dependencies foreign])
diff --git a/doc/Doxyfile b/doc/Doxyfile
index 7d9139a..a4a6497 100644
--- a/doc/Doxyfile
+++ b/doc/Doxyfile
@@ -32,7 +32,7 @@ PROJECT_NAME           = ctools
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 1.5.0
+PROJECT_NUMBER         = 1.5.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer
diff --git a/doc/source/conf.py b/doc/source/conf.py
index b7666c7..72d476b 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -78,7 +78,7 @@ copyright = u'2014-2017, ctools developers'
 version = '1.5'
 
 # The full version, including alpha/beta/rc tags.
-release = '1.5.0'
+release = '1.5.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/sonar-project.properties b/sonar-project.properties
index d0d4a06..46db5fd 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -1,7 +1,7 @@
 # Required metadata
 sonar.projectKey=ctools
 sonar.projectName=ctools
-sonar.projectVersion=1.5.0
+sonar.projectVersion=1.5.1
 
 # Description
 sonar.projectDescription="Cherenkov Telescope Array Science Analysis Software"